Spark-intensifier for gasolene-engines



W. G. BENNETT.

SPARK INTENSIFIER FOR GASOLENE ENGINES.

APPLICATION FILED IuNE I2. |920.

' 1,368,686. Patented Feb. 15, 1921'.

Adrian,

UNITED STATESPATENT o'FFIcEf.

WILLIAM G. BENNETT, 0F ADRIAN, WASHINGTON.

.SPARK-INTENSIFIER FOR GASOIIENE-ENGINES.

' Application filed June 12,

-to provide a device.J of* the above character extremely simple in construction and which may be readily and cheaply manufactured. A further object of the invention is to provide a device of this character whichis practically proof against short circuits.

Other objects ofthe invention will become apparent throughout the course of the following description. f

In the accompanying. drawings, wherein for the purpose of illustration is shown'a preferred embodiment of my invention and wherein like reference characters designate like parts throughout:

Figure 1 is a side elevation of my device, and i Fig. 2 is a transverse section taken therethrough. f

Referring now more particularly to lthe drawings, the 'numeral 10 indicates asuitable body portion preferably formedof ay single piece of insulating material such as hard fiber, bakelite, -hard rubber, or some; similar material. The body portion is rectangular in form and is provided in .the upper and lower edges 'thereof with spaced alined `bores 11, which are interiorly threaded and arranged in vertically opposed pairs. Transverse bores are formed 'in the side face of the body portion 10 to correspond in number andarrangement to the pairs of alined boresl 111. y I

Similarlyalined threaded bores 13 connect the corresponding bores 11 and. 12 thej bores'13 being adapted to receive adjustable electrodes generally taking the form of La brass screw or the like. s

Sleeves 15 .arel provided preferably formed of the same material as thebody portion 10 and having arranged' within the bores thereof the ends of insulating wires 17 and conducting element 18 of the wire projectin beyond. the lower end 1fof the sleeve. %Vashe rs'19 are provided having Specification of Letters Patent.

ing, a. body Patented Feb.' 15, 19,21o

1920. yseri-i1Naassavz.

central apertures adapted to receive the conducting element 18 and being of `a diameter greater than the diameter of the bores 16 of the sleeves 15, and of less diameter than the outside diame of said sleeves. The conducting element as hereinbefore tends through the center apertures of the washers 19 and is folded back about the face of the washer.

In my construction I preferably employ a multiple Wire conductor and the ends of this conductor are securedv by mushrooming them back upon 'the washers. The ylower end of the sleeve 15 is provided with external threads as -at 21 adapted to coact with the threads of the aperture 11 in which the sleeve will be inserted. It will be seen that it is practically impossible to form a short circuit around andabout the sleeve 15 in the conducting element and screw 14 as the entire body portion and sleeve are formed of insulating material.

The transverse bores 12 are counterbored stated ex-4 as at 22 for a short distaneet form a shoulder 23. A sheet of mica or other similar transparent insulating material rests against the shoulder and is retained in position by a spring retainin ring 24.' It will be obvious to those familiar with the artl that the appai'atus describedin the precedlng paragraphs is extremely simple `and will' have a small 'first cost and is not l'iable to get out of order.

Many changes being pdssible inthe shape, l

size and arrangement of fthe various parts shown, I do notlimit myself to the particular arrangement hereinbefore set forth, but may make any such changes Without departing from the s irit of the invention, or the sco eof the su joined claims.

aving now ,described my invention, what I claim is: n A

' l. 'A device of the type described comprisportion formed .of insulating provided in opposed .edges threaded bores arranged in material and with spacedpairs, and transverse. bores formed in the sfde face thereof corresponding 1n numberl and arrangement to the pairs of bores and extending intermediate the inner yends thereof,'threaded bores formed in said body portion connecting each bore ofeach of said pairs with 1t's corresponding transverse bore,

externally threaded -electrodes adjustable` within said last .pained bores, sleeves formed of insulating material'and having one end thereofA provided with external threads to ilo ' elements extending through the bores of said Washers and being bent back thereupon. 2. A device of the type described comprising7 a body portion formed of insulating material and provided in opposed edges with spaced threaded bores larranged in pairs, and transverse bores formed in the vside face thereof corresponding in number and arrangement to the pairs of bores and extending intermediate the portion connecting each bore of each of said palrs Wlth lts corresponding transverse bore, externally threaded electrodes adjusti inner ends thereof, threaded bores formed in said body named bores, Washersfdisposed Within said bores of greater diameter than the bore of said sleeves and provided with a restricted central aperture, conducting elements eX-' tending through said sleeves and insulated therewithin; theends of said conducting elements extending through the bores of said Washers and being bent back thereupon, said transverse bores being provided with a counterboreV forming a shoulder, a sheet of transparent insulating material disposed against each of said shoulders and retaining rings holding said sheets in position. s

, In testimony whereof I hereunto affix my signature.

WILLIAM Gr. BENNETT. 

